2008 Prius with 16K miles I can here some fainted sound when I start and close A/C. The A/C works just fine, but the sound made me uncomfortable. Any one has experienced such sound and is it a problem? I want to ask you guys first before I visit dealer. Thanks.
maclion, My Amapola, 2008 Touring, 24K miles, also has a faint, somewhat unusual sound when the A/C is first turned on or when switching from outside air to recirc. Kind of a soft moan for a second or two, sort of an, "Oh, now what?" sound. I believe its just the various flaps, etc changing position for the desired air flow. It doesn't sound grating or harsh, what I'm guessing is some plastic/rubber gaskets dragging slightly, or maybe the actuator/solenoid. Let's not be too hasty though. Best to wait and see if there are any other experiences with this.
This sound has been discussed previously; a search should find that previous discussion. It was concluded that a baffle was dragging inside the ducting behind the dash. It can be corrected or left alone as it is non threatening. Here is a link to the previous thread http://priuschat.com/forums/prius-main-forum/52721-startup-squeak.html